Bright tiny specks in windows

Little bright specks appear in windows. Mostly while using Adobe Photoshop CS (but I saw this in a Safari browser window once, too) while editing images, I see tiny, pixel-sized, dots/specks, bright green usually. There can be anywhere from 1 of them, to about 10 of them. They are not part of the image (they wont print, of course...and they come and go, so they aren't saved with the image). They appear in the window of the image I'm editing, and as I scroll...they scroll too. If I scroll them out of the window, then scroll back, they're gone! But other specks appear elsewhere to take their place. They don't seem to "hurt" anything...but it's hard to focus on cleaning up the REAL dust when these little specks keep popping up. I've tried restarting the computer several times, of course. Since I've seen them in more than one application, I rule out that it's a problem with Photoshop. Since they scroll, I rule out bad physical pixels on the display. I'd rather not have to reinstall the entire system...so flashing or resetting video setups would seem better, but I'm not sure where I'd start. Thanks.

You just require a generic windows app, the fact that it's an apple running windows doesn't affect the software, since your iMac is essentially a laptop in a desktop form factor.
Try VistaShades.
http://www.softpedia.com/get/Tweak/Video-Tweak/VistaShades.shtml

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